ucimf_start needs to be set setuid to root (and setgid to utmp) to be functional, otherwise users cannot
use keyboard shortcut in fbterm because Debian does not install fbterm with setuid by default.
setuid to root could probably doharmtoyoursecurity, so set it at your own risk. If you run FbTerm,
use fbterm-ifbterm_ucimf to start it instead.
ucimf needs to run under an UTF-8 consle environment, please use locale-a to see the UTF-8 locales that
your system is supported and use command like exportLC_ALL=zh_CN.UTF-8 to set up the locale.